WO2011138573A2 - Système de construction - Google Patents

Système de construction Download PDF

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Publication number
WO2011138573A2
WO2011138573A2 PCT/GB2011/000510 GB2011000510W WO2011138573A2 WO 2011138573 A2 WO2011138573 A2 WO 2011138573A2 GB 2011000510 W GB2011000510 W GB 2011000510W WO 2011138573 A2 WO2011138573 A2 WO 2011138573A2
Authority
WO
WIPO (PCT)
Prior art keywords
formwork
web
structural
panels
structural panels
Prior art date
Application number
PCT/GB2011/000510
Other languages
English (en)
Other versions
WO2011138573A3 (fr
Inventor
Robert Ashley Howorth
Original Assignee
Siftek Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siftek Limited filed Critical Siftek Limited
Priority to GB1219619.2A priority Critical patent/GB2493860A/en
Publication of WO2011138573A2 publication Critical patent/WO2011138573A2/fr
Publication of WO2011138573A3 publication Critical patent/WO2011138573A3/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84—Walls made by casting, pouring, or tamping in situ
    • E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
    • E04B2/8635—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties attached to the inner faces of the forms
    • E04B2/8641—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties attached to the inner faces of the forms using dovetail-type connections
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84—Walls made by casting, pouring, or tamping in situ
    • E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
    • E04B2002/867—Corner details
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84—Walls made by casting, pouring, or tamping in situ
    • E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
    • E04B2002/8676—Wall end details

Definitions

  • the present invention relates to a construction system comprising webs or ties together with structural and non-structural insulating panels.
  • the present invention relates to an assembly that acts as a permanent insulating formwork or wall form for the erection of in-situ concrete walls or walls formed by the use of a pourable and curable structural material in the construction of residential and commercial buildings.
  • the walls are formed from ply, cement particle board or other suitably strong sheet material, to the required plan dimensions and height, using external bracing systems or "A" frames to hold the formwork upright and then the wet concrete is poured into the cavity created by the formwork and cures. Once the concrete has cured the formwork is removed (struck).
  • the resultant concrete creates a very air-tight wall but with very little insulation value and typically additional insulation would need to be applied to either or both faces to achieve a thermally efficient wall, depending upon the use of the structure.
  • the present invention seeks to overcome this problem.
  • Formwork systems that use ply or cement-based sheet material or rely on either steel ties as described earlier, or webs that attach to each face of the sheet material and spans the core forming a spatial relationship between the sheet faces; the resultant former requires that the hole left after striking is filled and this additional labour creates a thermal bridge through the web from the exterior to interior face of the wall and also additional problems with waterproofing.
  • the present invention seeks to simplify and improve over this method of formwork and to avoid formation of voids which require subsequent filling.
  • the walls are formed by placing the Insulated Concrete forms in courses to the required plan shape and section height and held in place with proprietary bracing systems, typically fixed to one side only, until the concrete is poured.
  • the Expanded Polystyrene faces of the Insulated Concrete Forms are not struck, but left in place.
  • the resultant wall has the benefits of being very air tight with high levels of insulation, depending upon the thickness and type of insulation used.
  • Insulated Concrete Forms do not perform well in many areas.
  • TMP Thermal Mass Parameter
  • Insulated Concrete Forms are also prone to failure (also known as blow-outs) due to expanded polystyrene not being able to withstand the hydrostatic pressures of more fluid concretes, particularly the new breed of Self Compacting Concrete which are being specified to avoid the void formation typical of standard pumpable concrete mixes.
  • This frequent problem results in construction delays and added expense due to having to temporarily reinforce the faces of expanded polystyrene with ply or other structural sheets/boards.
  • the present invention seeks to provide a system of formwork construction that provides resistance to hydrostatic pressure failures or blow outs.
  • Insulated Concrete Forms lack mechanically fixity.
  • Most Insulated Concrete Forms have a plastic face or firring piece that is an integral part of the web or tie that is insert- moulded into the Form or Block and keeps both walls of expanded polystyrene in a spaced relationship.
  • This firring piece can be fixed to with screws but the pull-out strength is not great and does not allow heavy loads to be fixed to the wall without having to drill into the concrete core and the frequency and positioning of these firring pieces is often not convenient for internal fixing.
  • the present invention seeks to provide a system of formwork construction that provides automatic and uncompromised fixity in its structure. Insulated Concrete Forms have compromised fire resistance.
  • the expanded polystyrene used in Insulated Concrete Forms is normally flame-retardant, but is not ultimately fire resistant. This requires that both faces of the Insulated Concrete Form (internal and external) need to be clad in fireproof materials to attain the minimum standard of resistance to spread of flame and fire resistance of the structure.
  • the present invention seeks to provide a system of formwork construction that provides enhanced flame and fire resistance.
  • Insulated Concrete Formwork attracts high transport costs. Most items of Insulated Concrete Formwork come in block form, which in turn prohibits the amount that can be transported due to their high volume. This results in increased transport costs.
  • the present invention seeks to avoid formwork with high volume components.
  • Insulated Concrete Formwork has low impact resistance. Insulated Concrete Formwork does not have high-impact resistance due to the low density and low tensile strength of expanded polystyrene, which often results in robustness issues particularly when using thin-coat render systems.
  • the present invention seeks to provide an impact robust system of formwork.
  • Insulated Concrete Formwork has poor acceptance of finishes. Insulated Concrete Formwork is not a self-finished product and cannot accept sand and/or cement based renders or standard gypsum plasters. This results in the expense of dry lining internally to provide internal finish and to use more expensive acrylic-modified renders externally.
  • the present invention provides a structural insulated formwork system which avoids extra expense of finishing. Insulated Concrete Formwork offers poor "future-proofing".
  • Insulated Concrete Formwork is either made from expanded polystyrene (EPS) which is the only mouldable closed-cell plastic monomer able to be heat moulded, or is made from extruded polystyrene XPS).
  • EPS expanded polystyrene
  • the thermal capacities of both these products can only be increased by increase of thickness or by increase of density up to a certain point.
  • the walls or sides of the individual Form need to be increased in thickness, which would mean re-tooling to make a different product.
  • additional insulation would need to be mechanically attached to the EPS walls/sides, thus increasing the overall thickness of the structural wall created.
  • the present invention seeks to provide a system of structural insulated formwork where adaptation of insulation values is without the problems listed above.
  • Insulated Concrete Formwork lacks vertical joint reinforcement. Insulated Concrete Formwork has cooperative interlocking profiles on their horizontal or bedding joints. However, vertical or perpend joints are butt-jointed. This leaves the vertical join area of the Form prone to failure due to inability to resist the hydrostatic pressures of fluid concrete.
  • the present invention seeks to provide improvement in vertical joints.
  • Insulated Concrete Formwork lacks effective closure at structural openings.
  • Insulated Concrete Formwork generally relies upon timber and plywood, or upon proprietary extruded plastic cavity closers, to close the form at openings to prevent the fluid concrete from pouring out of the opening.
  • a timber or plywood closure has to be removed or struck once the concrete has set.
  • Plastic cavity closers can remain in place. Both systems provide only a limited amount of frame fixing capacity along with issues of cold bridging.
  • the present invention seeks to provide a sturdy and acceptable gap and end closure system.
  • United States Patent US 6 314 694 B1 discloses a one-sided, insulated formwork used in the construction of walls from pourable building material, such as concrete, including an insulating panel connectable to a removable panel by a connecting structure, which may include a permanent reinforcement embedded in the insulating panel.
  • the connecting structure may have a tie removably attachable to the reinforcement, or the reinforcement and tie may constitute a monolithic structure.
  • the tie may be asymmetric in shape to facilitate distribution of loads across the insulating panel, detachment of the removable panel, and enhance the structural integrity of the finished wall.
  • the present invention seeks to provide improvement there-over by elimination at least one stage of the concrete structure construction process.
  • United States Patent Application US 2004/068945 discloses a system of building economically constructed insulated concrete homes and apartment buildings using standard components such as wall ties, concrete forms, rigid foam insulation, and concrete.
  • the system creates a building that is insulated and thermally broken at its structural connections such that use in temperate and colder climates is possible.
  • the system uses aluminum forms which are removed after poured concrete sets.
  • the present invention seeks to provide improvement there-over by simplifying and reducing the number of operational steps required in construction of a concrete wall.
  • United States Patent Application US 2004/177580 discloses reinforced foam articles for use in concrete shuttering where reinforcement is provided for foam articles made from dry flowable expanding beads.
  • the reinforcement includes a network of elements, preferably woven or roving type.
  • the network is positioned within the foam matrix at a location remote from an applied force so as to impart increased bursting strength to the foam matrix.
  • the present invention seeks to provide improvement thereover by providing an altogether more robust concrete wall building system.
  • International Patent Application WO 0159227(A1) discloses a wall form assembly which comprises opposed foam panels disposed in parallel relationship to make a wall form for receiving a flowable material such as concrete and a plurality of connectors for tying the opposed foam panels together, a stackable insulating foam panel which has a top side and a bottom side.
  • Each of the panels has a median row of alternating projections and recesses with a similar complementary shape. The median row is disposed between two coplanar edge surfaces.
  • Each projection of the top side is opposed to a recess of the bottom side whereby the top side and/or the bottom side of the panel can be interconnected with either the top side or the bottom side of a like panel. Pairs of insulating panels are attached for concrete to be poured there-between.
  • the present invention seeks to provide improvement there-over by allowing optional use of insulation.
  • the invention seeks to remedy the afore-mentioned problems associated with existing concrete formwork systems and prior art, none of which has made provision for the measures shown in the examples of the invention described hereafter.
  • the present invention consists in a system for construction of formwork where a settable compound is pourable into a cavity in the formwork and retained by the formwork to set to form a completed structure: the system comprising: first and second structural panels; and a plurality of connecting webs; where the first and second structural panels each comprises a matching plurality of web sockets adapted to accept a sliding fit of a of connecting web, and where the connecting webs, when fitted into the web sockets, hold the first and second structural panels parallel to one another and spaced apart from one another; the system being characterized by the first and second structural panels being adapted to be left in place after the settable compound has set to provide a structural outer and inner wall for the completed structure.
  • each of the first and second structural panels can comprise an inner surface to face the cavity when the formwork is assembled; and at least one of the first and second structural panels can comprise insulating material on its inner surface; the insulating material being moveable to allow sliding engagement of a connecting web with a web socket.
  • the invention also provides a system wherein the insulating material can comprise one or more insulating blocks; and with the formwork completed, an insulating block is slidable in a vertical direction between adjacent connecting webs to allow inserting and removal.
  • the invention also provides a system wherein the first and second structural panels can be each removable and replaceable in the event of damage to the completed structure.
  • the invention also provides a system wherein insulating material can comprise an upper profile and a lower profile; the upper profile being complementary to the lower profile such that, when sets of formwork are stacked vertically upon one another, the upper profile and the lower profile intermesh with one another.
  • each connecting web can comprise a profile at either end for engaging a web socket, and further provides that the connecting web also can comprise at least one of: an end flange, adapted to retain insulating material against a first structural wall adjacent to the cavity; a horizontal web section between the end flange and a second structural wall; and one or more shaped indentations in the horizontal web section adapted to accept a reinforcing bar into the cavity.
  • the invention further provides a system wherein the first and second structural panels can each comprise shaped profiles designed to interlock when sets of formwork are stacked one above another.
  • the invention further provides a system which can comprise a water bar web, extending, when the formwork is constructed, between the first and second structural panels; wherein the first and second structural panels can each comprise vertical profiles at the vertical edges thereof; and the water bar web can be adapted to engage the vertical profiles between adjacent respective pairs of first and second vertical panels when sets of formwork are stacked side by side.
  • the invention also provides that the water bar comprises an end flange.
  • the invention yet further provides a system which can comprise a cavity closer adapted to close an open end of the cavity: and a structural board, adapted to support the cavity closer and adapted to fill the space between the first and second structural walls, where the cavity closer can comprise support and fixing means for a reinforcing bar.
  • the invention further provides a system which can comprise a panel jointing piece, adapted to allow the vertical ends of pairs of first structural panels and the vertical end of pairs of second structural panels to be joined together at an angle to one another.
  • the invention further provides a system wherein the web sockets can be set into the first and second structural walls, and can be injection molded.
  • the invention further provides a system wherein the at least one of the water bar, the web socket, the connecting web and the panel jointing piece can fabricated in whole or in part using plastic, one possibility for the plastic being polypropylene.
  • the invention also provides a system wherein the connecting web can be of selectable length to accommodate different thicknesses of completed structure.
  • Figure 1A is a perspective view that shows assembly of the system (the composite elements) arranged to produce the Wall Form;
  • Figure 1B is a partial view through the unfilled wall form of Figure 1A, looking in the direction of Arrow B;
  • Figure 2 is a perspective view of the insert-moulded Web Socket with continuous vertical central channel and circular evenly spaced perforations set symmetrically about a vertical central axis;
  • Figure 3A is a symmetrical view of the internal face of the Form panel with the insert- moulded web socket in-situ;
  • Figure 3B and 3C are expanded views of the top and bottom of the independent panel respectively, illustrating mutually cooperative engagement profiles
  • Figure 3C is a view showing a continuous vertical recessed profile of both edges of the independent panel
  • Figure 4 shows a perspective view of an exemplary connecting web element spacer used to place and maintain independent panels in a parallel planar spaced relationship
  • Figure 5A shows a manner of creating a ninety degree corner between two independent panels using a panel jointing piece
  • Figure 5B is a plan view showing how a ninety degree turn in a wall form 10 can be achieved
  • Figure 5C shows how a Tee Wall junction is formed using the panel jointing piece
  • Figure 6A shows the cavity closer arrangement used at structural openings and Figure 6B shows a method of securing a reinforcement bar around the opening;
  • Figure 7 shows a water-bar web used to join vertical joints between independent panels;
  • Figure 8 is an isometric view of a variant upon the invention, being a section of formwork illustrating how separate sections of insulating material can be assembled and removed to allow completed structures to be formed using different grades of insulating material.
  • Figure 1A a perspective view showing assembly of elements of the structural insulated system arranged to produce a wall form.
  • a structural insulated formwork wall form 10 comprises a first independent panel 12 providing an interior wall for the overall wall form and a second independent panel 14 providing an exterior wall.
  • Each of the independent panels 12, 14 is manufactured from structural board that forms both an interior face 16 and an exterior face 18 of the wall form 10, the interior face 16 bearing wide witness lines 20 to indicate the positions of insert-moulded web sockets 22 each of which accepts a respective one of a plurality of connecting web 24.
  • a cavity 26 is formed the dimensions of which can be increased/decreased by using differing widths of connecting webs 24.
  • An insulation material 28 is adhered to or inserted between the webs or moulded on to one internal face of the second independent panel 14 in those situations where an enhanced thermal performance of the completed wall is required.
  • Such a composite panel, comprising both an independent panel 12, 14 and insulation material 28 can be positioned as the external portion of the overall wall 10, as the internal portion, or both, depending on the thermal requirements.
  • the insulation material 28 has a top surface profile 29A on its top surface and a bottom surface profile 29B on its bottom surface.
  • first 38 and second 40 engagement profiles (shown in Figure 3) lock together to attach the top, side and bottom edges of independent panels 12, 14 together, and the top 29A and bottom 29B surface profiles of the insulation layer 28 interlock to provide positive engagement of joints and to eliminate concrete slurry seepage through the joint.
  • Figure 1 B a partial view through the unfilled wall form of Figure 1A, looking in the direction of Arrow B.
  • each connecting web 24 comprises two or more vertically spaced horizontal section which hold open and maintain the cavity 26. It is into the cavity 26 that the concrete or other settable building material is poured to complete construction of the wall form 10.
  • FIG 2 a perspective view of the insert-moulded Web Socket 22 with continuous vertical central channel and circular evenly spaced perforations set symmetrically about a vertical central axis.
  • the web socket 22 is shown prior to its being insert-moulded into an independent panel 12, 14.
  • the web socket 22 runs the full height of the independent panel 12, 14 and comprises a moulded or extruded plastic component having a flanges 30, the flanges having perforations 32.
  • the perforations 32 allow the independent panel 12, 14 structural board material to pass through the connecting web 22 to assist with the encapsulation and mechanical bond between the connecting web 22 and structural board of the independent panel 12, 14.
  • the web socket 22 has a T-Shaped void 34 running the full length of the web socket 22 which accepts a shaped vertical end of one side of the connecting web 24 to form a mechanical key thus to connect both independent panels 12, 14 together to create the Structural Insulated Form 10.
  • Figure 3A a symmetrical view of the internal face of the independent panel 12, 14 with the insert-moulded web socket 22 in-situ.
  • the view is artificially terminated with plane 36 which plays no further part in the invention and merely serves to limit the extent of the independent panel 12, 14 shown.
  • Figures 3B and 3C show expanded views of the top and bottom of the independent panel 12, 14 respectively, illustrating mutually cooperative engagement profiles, a first engagement profile 38 being provided, in this example, at the top edge of the independent panel 12, 14 and second engagement profile 40 being provided, in this example, at the bottom edge (not shown in Figure 3A) of the independent panel 12, 14.
  • first 38 and second 40 engagement profiles co-operatively engage one another to hold the assembled independent panels 12, 14 firmly against hydrostatic pressure and to provide a seal against leakage and seepage of settable liquid building materials, such as poured concrete, while it is setting.
  • Figure 3D a view showing a continuous vertical recessed profile 42 provided in both vertical (when assembled into a wall form 10) edges 44 of the independent panel 12, 14. 2011/000510
  • the web socket 22 is insert-moulded into the structural independent panel 12, 14 which has a rebate detail on all four edges (R & R1) that cooperatively interlock with the wall forms 10 already laid when constructing wall elevations and prevents seepage of concrete slurry.
  • the web socket void 22 is exposed to the inner face of the independent panel 12, 14 to accept connecting webs 24 otherwise shown in more detail in Figure 4.
  • Figure 4 showing a perspective view of an exemplary connecting web 24 used to place and maintain the independent panels 12, 14 in a parallel planar spaced relationship.
  • the connecting webs 24 have a plurality of vertically spaced horizontal sections 46 (only two of which are shown) that have cup-shaped indentations 48 adapted to accept and position horizontal reinforcing bars of varying diameters and are spaced vertically to allow concrete to flow unimpeded.
  • the horizontal web sections 46 are connected to a wide connecting bar flange 50, if used with insulation material 28, which prevents concrete slurry tracking into insulation material slots 52, shown in Figure 1.
  • the insulating material slots 52 are provided to allow the connecting webs 24 to reach the web socket 22 in the structural independent panel 14 situated behind the insulation material 28.
  • a far end flange 50A serves a similar purpose for the web socket 22 proximate thereto.
  • first vertical member 58 then abuts or replaces the connecting web flange.
  • the horizontal sections 46 56 differ in length to provide differing structural concrete thicknesses for differing structural applications.
  • Figure 5A showing a panel jointing piece 60 for connecting wall forms 10 together at ninety degrees.
  • a ninety degree jointing piece 60 comprises a first fixing section 62 wherein a first independent panel 12, 14 can be inserted along a vertical edge, and a second fixing section 64 wherein a second independent panel 12, 14 can be inserted along a vertical edge.
  • the first and second fixing sections 62, 64 are at right angles to one another.
  • the jointing piece 60 which is preferably a plastic extrusion and can be used to strengthen a cut joint, formed when a ninety degree angle is formed.
  • the extrusion can be formed to provide popular angles commonly used in building design such as thirty, forty five, sixty and ninety degrees.
  • the extrusion is glued and screwed to the cut face of the independent structural panels 12, 14. Self tapping screws form a convenient means of attachment.
  • Figure 5B a plan view showing how a ninety degree turn in a wall form 10 can be achieved.
  • a 90 degree corner is formed using the composite parts of the system.
  • the independent panels 2, 14 used for the internal skin are butt-jointed to the return wall to form the ninety degree internal angle using the panel jointing piece 60.
  • a composite insulated panels 12, 14, 28 is used for the external skin
  • a simple butt-joint is achieved with a section of insulation 28 removed from the independent panel 12, 14 and another Panel Jointing Piece 60 fixed to the external face with screws.
  • the corners would be cut on consecutive courses to provide a staggered or stretcher joint to avoid inter panel 12, 14 joints lining-up vertically.
  • Figure 5C shows how the panel jointing piece 60 is used to form a "Tee" wall junction wall form 10A.
  • An aperture in an independent panel 12, 14 has each of its two cut ends engaged with a with a respective first fixing section 62 of a respective one of two ninety degree jointing piece 60 and the ends of two right angle independent panels 12, 14 engaged with the second fixing section 64 on each respective of a ninety degree fixing piece 60.
  • a cavity 26 is formed in both the top and descending section of the T shape 10A (seen in plan view) and maintained by connecting web elements 24.
  • Figure 6A showing one example of cavity closer arrangement used to seal structural openings
  • Figure 6B which shows a method of securing a reinforcement bar around the opening.
  • Figure 6A shows a method of closing openings, such as doors and windows, or stop- end walls, within the wall form 10 10A, the component used commonly being referred to as a cavity closer 66.
  • the body of the cavity closer 66 is filled with polyurethane foam 68 to prevent thermal bridging across the opening.
  • Two plastic protrusions or tangs 70 on the rear face of the cavity closer 66 are provided to be encapsulated by the fluid concrete and hence hold the cavity closer 66 permanently in place once the concrete has hardened.
  • the cavity closer 66 is held in place with one or more web sockets 22 that are insert moulded into a length of structural board 12C the width of which changes to accord with differing cavity 36 sizes.
  • Panel Jointing Pieces 60 is used to fix the edges of the structural board 12C of the form to the edges of the structural board forming the face of the cavity closer.
  • FIG. 7 Attention is next drawn to Figure 7, showing, from above, an exemplary water-bar web 75 used to join vertical joints between independent panels and to prevent ingress of water and egress of cement slurry there between.
  • the water-bar web 75 is used to close the vertical joints between independent panels 12, 14 when the structural panels are brought together side by side to construct a complete wall form 10 10A.
  • the water bar web has distal profiles 77 at either end that engage with the vertical recess profile 42 within the vertical edge 44 of the independent boards 12, 14 when the independent boards 12, 14 are brought together when forming a length of wall.
  • the water bar web 75 also comprises a flange 50 and that protects the slot formed in the insulation material 28 from concrete slurry seepage and an end flange, similarly to a normal connecting web 24.
  • a shorter water bar web (not shown) is also used to join independent boards 12, 14 that are used together without the use of insulation material 28 to form a composite panel.
  • the shorter water bar web also has a profile to prevent concrete slurry from seeping through the completed joint.
  • wall forms 10 are constructed together, building from foundations with concrete beam and block floors.
  • Wall units 10 are constructed, like brickwork, in may courses, there being plural wall units 10 to each course, the courses being stacked one upon another.
  • Independent structural panels 12, 14 are cut at different lengths on vertically consecutive courses to form corners so that vertical joints do not appear contiguously up each set of courses.
  • Figure 8 is similar to Figure 1 and like elements is given like numbers.
  • the continuous block of insulating material 28 where only spaces were left in the unity to allow assembly of the connecting webs 24 into the web sockets 22, is replaced by insulating blocks 78 which can be inserted into and removed from the formwork 10 section as indicated by arrow 80.
  • Each of the insulating blocks 78 is of the same vertical extent as the first and second independent structural panels 12, 14 and fits snugly between adjacent connecting webs 24.
  • this variant of the invention permits repairs to be made.
  • the second structural panel 14 can be removed, either by physical extraction (in the case of severe damage) or by vertical sliding thereof between adjacent water bar webs 74 of adjacent angled panel jointing pieces 60.
  • the second structural panel 14 slides its embedded web sockets 22 relative to the T-shaped profiles 54 (which are fixed into the concrete fill) on the connecting webs 24. I this way the second structural panel can be removed and returned to its position, or replaced by another.
  • the insulating blocks 78 can be slid for removal and replacement against the set concrete core and the second structural panel 14 if the second structural panel 14 is not removed or is only partially removed. If the second structural panel 14 is wholly removed, the insulating blocks 78 can be individually extracted and inserted in a horizontal direction between adjacent connecting webs 24.
  • the system allows changes in the type or depth of insulation to be made even after the structure has been completed.
  • the entire structure with the exception of the concrete or other settable compound core and the connecting webs 34, can be disassemble, changed or repaired a reassembled using this system.
  • Figure 1 shows, for preference, the insulation material 28 being provided as an attachment to the second independent panel 14 to be part of the panel assembly 14.
  • the exemplary arrangement shown in Figure 8, has, for preference, insulating blocks 78 which are not attached to the second independent panel 14 but are, instead, are individually able to be inserted to give the system more flexibility in terms of insulation material used, for example, allowing better thermal properties to be exploited or allowing narrower webs (less depth of insulation) to be used when thinner 'high performance' insulation is required.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Revetment (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

Un système de coffrage comprend des premier (12) et second (14) panneaux structurels parallèlement espacés l'un par rapport à l'autre et maintenus ensemble par une pluralité d'armatures de raccordement (24) qui glissent dans des paires verticales opposées de manchons de couplage (22) présentant des profils en forme de T (54) aux deux extrémités dans le but d'assurer le couplage avec l'armature (manchons 22). Des rebords (50, 50A) mettent respectivement en prise un matériau isolant (28, 78) sur la face intérieure du second panneau structurel (14) et la face intérieure du premier panneau structurel (12). Le matériau isolant (28, 78) présente un profil de surface supérieure (29A) et un profil complémentaire de surface inférieure (29B), qui se bloquent l'un l'autre lorsque des sections de coffrage (10) sont empilées les unes au-dessus des autres. Les panneaux structurels (12, 14) présentent des profils de bord verticaux qui se mettent en prise avec une armature de cassis (74) dans le but d'assurer une étanchéité contre des fuites dans des sections de coffrage disposées côte à côte, et présentent des profils horizontaux qui se bloquent les uns par rapport aux autres lorsque des sections de coffrage (10) sont empilées les unes au-dessus des autres. Des pièces de raccordement de panneaux (60) permettent aux panneaux structurels d'être réunis les uns aux autres à un certain angle le long de bords verticaux. Des dispositifs de fermeture de cavités (66) munis de berceaux pour barres de renfort (74) assurent l'étanchéité des extrémités ouvertes d'un coffrage (section 10), et des barres de renfort (74) sont introduites de sorte à reposer sur des crans (48) ménagés sur des sections d'armature horizontales (46) avant que du béton ne soit versé à l'intérieur d'une cavité (26) formée lors de l'assemblage du coffrage (10). Une fois que le béton a fait prise, les panneaux structurels (12, 14) restent en place, jouant ainsi le rôle de partie structurelle extérieure/intérieure de la structure achevée. L'isolation (78) peut être remplacée ou modifiée et/ou des dommages à un panneau structurel peuvent être réparés au moyen de blocs isolants (78) qui peuvent être glissés ou retirés. Le démontage et le remontage de l'ensemble du coffrage sont ainsi facilités tandis que le noyau de béton qui a fait prise reste en place.
PCT/GB2011/000510 2010-04-01 2011-04-01 Système de construction WO2011138573A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1219619.2A GB2493860A (en) 2010-04-01 2011-04-01 A construction system

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GBGB1007303.9A GB201007303D0 (en) 2010-04-01 2010-04-01 Structual insulated form
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CN103334758A (zh) * 2013-07-02 2013-10-02 杭州瑞顿立体车库有限公司 一种防漏抗渗混凝土咬合式复合井壁及施工方法
DE102013005470A1 (de) * 2013-03-28 2014-10-02 B.T. Innovation Gmbh Schalungssystem
FR3007440A1 (fr) * 2013-06-20 2014-12-26 Biplan Bloc coffrant integrant un pre-cadre d'huisserie
CN104350222A (zh) * 2013-01-25 2015-02-11 姜钟宇 H型条及利用该h型条和非金属制模具框的模具设置方法
WO2016059357A1 (fr) 2014-10-15 2016-04-21 Twinwall Icf Limited Système de coffrage de dalles
WO2016141418A1 (fr) * 2015-03-12 2016-09-15 Jing Hai Jun Système mural modulaire amélioré

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WO2001059227A1 (fr) 2000-02-11 2001-08-16 Polyform A.G.P. Inc. Panneau de construction superposables
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Publication number Priority date Publication date Assignee Title
CN104350222A (zh) * 2013-01-25 2015-02-11 姜钟宇 H型条及利用该h型条和非金属制模具框的模具设置方法
CN104350222B (zh) * 2013-01-25 2016-09-28 姜钟宇 H型条及利用该h型条和非金属制模具框的模具设置方法
DE102013005470A1 (de) * 2013-03-28 2014-10-02 B.T. Innovation Gmbh Schalungssystem
DE102013005470B4 (de) 2013-03-28 2020-06-18 B.T. Innovation Gmbh Schalungssystem
FR3007440A1 (fr) * 2013-06-20 2014-12-26 Biplan Bloc coffrant integrant un pre-cadre d'huisserie
CN103334758A (zh) * 2013-07-02 2013-10-02 杭州瑞顿立体车库有限公司 一种防漏抗渗混凝土咬合式复合井壁及施工方法
WO2016059357A1 (fr) 2014-10-15 2016-04-21 Twinwall Icf Limited Système de coffrage de dalles
US10487501B2 (en) 2014-10-15 2019-11-26 Twinwall Icf Limited Formwork system
WO2016141418A1 (fr) * 2015-03-12 2016-09-15 Jing Hai Jun Système mural modulaire amélioré

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GB201219619D0 (en) 2012-12-12
WO2011138573A3 (fr) 2012-04-12
GB2493860A (en) 2013-02-20
GB201007303D0 (en) 2010-06-16

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